Plant for dyeing yarn continuously

ABSTRACT

A plant for dyeing yarn discontinuously includes a perforate conveyor the upper run of which extends through a zone at which yarn is deposited in skeins or in continuous zig-zag formation, a zone in which dye is applied, a zone in which the dye is fixed by heating, a washing zone and a drying zone in which the yarn is alternately squeezed and expanded.

United States Patent Rigacci [54] PLANT FOR DYEING YARN CONTINUOUSLY Inventor: Fernando Rigacci, 10 Via Castelnuovo, Prato, Florence, Italy Filed: Dec. 22, 1970 Appl. No.: 100,671

Foreign Application Priority Data Dec. 23, 1969 Italy ..4904 N69 US. Cl ..6'8/5 D, 68/19.1, 68/45, 68/205 R Int. Cl. ..B05c 3/138 Field of Search..68l5 D, 5 E, 9, 19.1, 20, 205 R, 68/43-45; 8/151 [451 Oct. 10, 1972 [56] References Cited UNITED STATES PATENTS 2,532,471 12/1950 Wedlen ..68/5 D 1,723,514 8/1929 Klein ..8/151 1,764,631 6/1930 Hubinger ..68/44 2,522,900 9/ 1950 Schmitt...' ..68/5 D Primary Examiner-William 1. Price Attorney-Waters, Roditi, Schwartz & Nissen [57] ABSTRACT A plant for dyeing yarn discontinuously includes a perforate conveyor the upper run of which extends through a zone at which yarn is deposited in skeins or in continuous zig-zag formation, a zone in which dye is applied, a zone in which the dye is fixed by heating, a washing zone and a drying zone in which the yarn is alternately squeezed and expanded.

3 Claims, 6 Drawing Figures PATENTED 10 1972 3 6 96. 6 42 sum 1 or 2 Fig.1

PLANT FOR DYEING YARN CONTINUOUSLY BACKGROUND OF THE INVENTION This invention relates to plant for flamme yarn dyeing, that is with discontinuous coloring of the yarn.

SUMMARY OF THE INVENTION According to the present invention, there is provided a yarn dyeing plant comprising a conveyor for receiving yarn to be dyed, means for applying dye to the yarn on the conveyor, means for fixing the dye in the yarn by raising the temperature thereof, means for washing the yarn while continuing motion on the conveyor, and means for drying the yarn.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described, by way of example, with reference to the accompanying diagrammatic drawing, in which:

FIG. 1 is a plan view, partly in section of a dyeing DESCRIPTION OF THE PREFERRED EMBODIMENT A permeable endlessconveyor 1 extends between rollers 3 and 5, each of which maybe fabricated from a pluralityof flanked wires and a metal mesh. The upper active run of the conveyor 1 passes through a zone A where the dyeing takes place, through atreatment zone B defined by a'steam chamber 7, througha zone C where washing of the dyed material is effected, and through a-zone D defined by a drying unit 9.

- Provision is made'for loading the material between the transmission roller-3andthe dyeing zone A. The material is arranged either as transversely orientated elongate skeins M or as a continuous zigzag bundle of yarnsF as shown in FIG. I. An endless web 11 acting as a distributor is shown in FIG.-2 or asmodified at 13in FIG. 5. The endless web 11 or .13 serves both to facilitate the orientation of the skeins or bundle of yarns respectively to count the working, and also to facilitate the desired passage of the material.

At the-zone A- a table 15 or other support is provided tosupport thewires of the conveyor 1. A single color dye distribution device'for producing flamme effects or a multi-dye distribution device for'multi-color flamme effects, acts from above and in the direction ofmotion of the upper run. The distribution device includesa structure with a plurality of longitudinal tubes 17 each of which has spaced vertical holes 19 joined to a respective color dye supply, by means of flexible conduits or the like, and advantageously with metering pumps.

The structure formed by the tubes 17 is operated for cyclic raising and loweringmotion synchronized with horizontal motion in the direction of the upper run-of the endless conveyor 1. Connecting rods 21 are movable for sliding and angular adjustment with respect to pins 23 and are driven by eccentrics 25. The control of the structure 17 must be such as to provide adequate force on the advancing material, accompanying the material in the longitudinal direction during the lowering stage andthus of the pressing stage, while return movements of the tubes 17 have to take place without any contact with the material. As one or more dyes can be metered through the holes 19 at different points on the loaded material, it is possible to obtain an intentionally discontinuous dyeing of the yarns, with one or more colored dyes.

The material which has received the dye is passed into the steam chamber 7 in the zone B for thermal and conditioning treatment. Subsequently the material is passed into the washing zone C, in which table structures 27 are provided. The latter structures act as squeezers, being driven by connecting rod-crank systems 29, 31, the squeezers 27 cooperating with a support surface 33 to squeeze and then re-expand the material during passage through the zone. The structures 27 and the support surfaces 33 are made like grids or are drilled with a multiplicity of holes. In front of each squeezing structure a multi-nozzle distributor 35 is provided, said nozzles being arranged transversely so as to supply a washing fluid to thedyed material. The

structure 27 and the support surfaces 33 being perforate enablecyclic absorptions and squeezings of the material as it passes through thezone C. Liquid may be delivered at anintermediate position of the grid.

Downstream of a washing zone for the rinsing of the material, and a squeezing zone, the drying of the material treated takes place in the zone D to the desired moisture content.

I claim:

I. A yarn dyeing plant comprising a conveyor for receiving yarn to be dyed,

means for applying dye to the yarn on the conveyor,

means for fixing thedye in the yarn by raising the temperature thereof,

means for washing the yarn while continuing motion on the conveyor,

means for dryingthe yarn,

means for raising and lowering the dye-applying meanswith respect to the conveyor, and

means defining asupport surface disposed below the conveyor working run and opposed to the dye-applying means.

2. A plant according to claim 1,.wherein the conveyor is permeable and the washing means include a non-permeablestructure,

a permeable structure disposed on the opposite side of the :working run of the conveyor to said rigid structure,

:means forreciprocating the non-permeable structure relatively to the permeable'structure whereby to squeeze andrelease the yarn materialon the conveyor,.the reciprocating motion including a component in the-direction of movement of the yarn, and

spraying means for delivering awashing liquid to the yarn.

3. A plant according to claim 1, comprising a yarn material distribution device including an endless flexible belt which co-operates with the working run of the belt to distribute the yarn evenly thereon.

1! k I I! 

1. A yarn dyeing plant comprising a conveyor for receiving yarn to be dyed, means for applying dye to the yarn on the conveyor, means for fixing the dye in the yarn by raising the temperature thereof, means for washing the yarn while continuing motion on the conveyor, means for drying the yarn, means for raising and lowering the dye-applying means with respect to the conveyor, and means defining a support surface disposed below the conveyor working run and opposed to the dye-applying means.
 2. A plant according to claim 1, wherein the conveyor is permeable and the washing means include a non-permeable structure, a permeable structure disposed on the opposite side of the working run of the conveyor to said rigid structure, means for reciprocating the non-permeable structure relatively to the permeable structure whereby to squeeze and release the yarn material on the conveyor, the reciprocating motion including a component in the direction of movement of the yarn, and spraying means for delivering a washing liquid to the yarn.
 3. A plant according to claim 1, comprising a yarn material distribution device including an endless flexible belt which co-operates with the working run of the belt to distribute the yarn evenly thereon. 